Assessment FOR Learning — Teacher Feedback (SPH3U)
📋 Not Graded — Descriptive Feedback Only
Purpose: Reviews Grade 10 prerequisite skills (basic wave terminology) and Grade 11 algebra needed for Unit 4.
Reminders: wave equation, ratios, basic algebra. \( v=343 \) m/s for sound at \(20°\)C.
Q1 — Wave terminology prereq
Define each: amplitude, wavelength, frequency, period, crest, trough, compression, rarefaction. Use a sketch.
Q2 — Transverse vs. longitudinal
State the difference between transverse and longitudinal waves. Give an example of each. To which type does sound in air belong?
Q3 — Calculation prereq
A wave on a slinky has period \(0.25\) s and wavelength \(0.80\) m. Calculate (a) frequency; (b) speed.
Q4 — EM spectrum recall
List, in order of increasing frequency, these EM bands: visible, infrared, ultraviolet, radio, microwave, X-rays. Which band has the longest wavelength?
Q5 — Sound concept (multiple choice)
Sound cannot travel through:
Q6 — Hearing range & safety
State the typical human hearing frequency range. Explain (in 2 sentences) how prolonged exposure to sound above 85 dB damages hearing.
Q7 — STSE
Give two real-world technologies that rely on (a) reflection of sound waves, (b) resonance.